Say whaatt? There's a brand new trivia game out on the App Store, and it just happens to be free! It's also quite simplistic, in that it's a social trivia game that finds you creating a question on your own using five images and sending it to your friends to see who can guess it.
Since all the questions are user-created, there's plenty of opportunities for players to customize their games and slide in in-jokes with friends. You'll also be able to rank questions to play the most popular ones as well.
Sounds like a pretty interesting game of trivia, especially if you and your friends like to try to confuse each other with bizarre questions. Give it a try and download WHAATT? for free from the App Store.